If you click on the scales of your own post it gives you your rep point total and if that post has received rep. If you look on your user cp, it has a detailed summary showing what was said and what posts. Under the post count, you get a green box for every 100 points, if this is similar to other forums using this system. So the more green boxes you have, the better your rep and it shows you are worth listening too.

If it follows the other similar system, the amount of rep a person receives when you rep them will depend on how much rep you have, your post count, and how long you have been a member. People are still catching on since it is new.